Large walk-in salt mist box
By designing a large walk-in salt spray box, the problem that the existing salt spray test box cannot simulate complex environments is solved, and efficient salt spray tests for automobile parts are realized, reasonable structural and environmental control is provided, and complex temperatures are met. The simulation requirements of humidity.
Patent Information
- Application Number
- CN202420232891.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The existing salt spray test chambers are difficult to simulate complex temperature and humidity environments, and cannot meet the corrosion testing needs of automotive parts in complex use environments, especially under low temperature and high humidity conditions.
A large walk-in salt spray box is designed, including a support base plate, a salt spray box case and a functional area box case. The space is divided into test areas, circulation adjustment areas and waiting areas by partitioning wall panels, and salt spray release is used. The nozzle and temperature-humidity adjustment tube group simulate complex environments to achieve airflow circulation and temperature and humidity control.
It provides a salt spray box with large internal space and reasonable structure, which can conduct salt spray tests of large automobile parts, minimize the impact of personnel entry and exit on the temperature and humidity in the test area, and can adjust the temperature and humidity in a timely manner to meet the needs of Simulation requirements for complex environments.
Smart Images
Figure CN222152067U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of environmental testing equipment, and more specifically, to a large-scale walk-in salt spray box. Background Art
[0002] Salt spray test chamber is an important testing equipment for studying the adaptability and reliability of various environments in the automotive industry, mechanical industry, instrumentation and other industries. In the automotive industry, the anti-corrosion performance of all metal parts of the vehicle is currently mainly tested through salt spray test chambers.
[0003] In conventional salt spray tests, in addition to the size of the salt spray box being difficult to meet the automotive industry's requirements for large component testing, the conventional salt spray box also has defects such as few controllable conditions and no temperature, humidity and low temperature control functions. Conventional salt spray boxes are difficult to restore the corrosive environment of automobiles in various complex use environments. For example, under the climatic conditions of northern winter, automobile chassis parts are easily exposed to ice and snow mixtures containing snow melting agents, which can cause corrosion to automobile chassis parts. Ordinary salt spray boxes cannot truly simulate the actual use status of automobile parts. Moreover, as the size of the salt spray box continues to increase, the technical implementation difficulty of salt spray spray control and temperature and humidity control in the salt spray box is also different from that of small salt spray boxes. In the prior art, the patent CN116539504A for large salt spray boxes discloses a salt spray test box, which improves the airflow circulation of the large salt spray box and meets the requirements of the salt spray test of automobile parts. However, the present invention does not consider how to simulate complex temperature and humidity changes. Therefore, there is a need to design a large salt spray box with a reasonable layout and wide applicability to simulate complex temperature and humidity environments. Utility Model Content
[0004] One purpose of the utility model is to provide a large walk-in salt spray box, which has a reasonable internal structure and is suitable for salt spray tests of large components, and the interior can simulate different humidity and temperature environments according to test requirements.
[0005] In order to achieve these purposes and other advantages of the utility model, according to one aspect of the utility model, a large walk-in salt spray box is provided, comprising:
[0006] A supporting bottom plate, on which a salt spray box shell and a functional area box shell are detachably connected, a partition wall is provided at the connection position between the functional area box shell and the salt spray box shell to separate the internal spaces of the two, the area enclosed by the salt spray box shell and the partition wall is the test area, and a partition is provided in the area enclosed by the functional area box shell and the partition wall to divide the space into a circulation adjustment area and a waiting area, a first air vent and a second air vent are provided on the partition wall to connect the test area with the circulation adjustment area, a manhole is provided on the partition wall to connect the test area with the waiting area, a first insulation door is provided on the side wall of the salt spray box shell, and a second insulation door is provided on the side wall of the functional area box shell around the waiting area; a test control device, which includes a salt spray release nozzle and a temperature and humidity adjustment tube group, the salt spray release nozzle is fixed in the test area, and the temperature and humidity adjustment tube group is fixed in the circulation adjustment area.
[0007] Preferably, the first air outlet is located at the upper part of the partition wall panel, and an electric shutter is installed therein; an air supply fan is installed on one side of the first air outlet located in the circulation adjustment area, and the air supply fan is connected to a fan motor outside the functional area box shell; the second air outlet is located at the lower part of the partition wall panel, and a salt spray filter is installed on one side of the second air outlet located in the circulation adjustment area, and a temperature-insulating rolling shutter door is installed in the manhole.
[0008] Preferably, the temperature and humidity regulating tube group includes an evaporator, a humidifying tube, and a heating tube. The tube body of the temperature and humidity regulating tube group is supported by a bracket. The evaporator, the humidifying tube, and the heating tube are all provided with a solution inlet and an outlet on the functional area shell.
[0009] Preferably, the supporting bottom plate comprises a steel frame base and a box shell bottom plate, and a portion of the box shell bottom plate located in the test area is fixedly connected upwardly to a grid support, on which a steel grid is supported.
[0010] Preferably, the supporting bottom plate comprises a steel frame base and a box shell bottom plate, and a portion of the box shell bottom plate located in the test area is fixedly connected upwardly to a grid support, on which a steel grid is supported.
[0011] Preferably, the portion of the box shell bottom plate in the test area is higher in the middle and lower on both sides, and the box shell bottom plate in the test area is recessed downward along the periphery to form a drainage groove.
[0012] Preferably, a steam spray pipe is provided between the drainage trough and the steel grille, and is circumferentially arranged just above the drainage trough.
[0013] Preferably, the salt spray box shell comprises a salt spray box vertical plate and a salt spray box top plate, and the salt spray box top plate is a herringbone structure with a pointed top in the middle, and the angle of the pointed top is 115° to 120°.
[0014] Preferably, an exhaust through hole and several air pressure balance holes are opened on the vertical plate of the salt spray chamber, the exhaust through hole is connected to an exhaust pipe outside the test area, and the air pressure balance hole is connected to a check valve outside the test area.
[0015] Preferably, the salt spray box shell, functional area box shell, and box shell bottom plate are all sandwich-type plates consisting of an inert glass fiber reinforced plastic plate on one side, a stainless steel plate on the other side, and an inner insulation layer, and the insulation layer is a polyurethane material with a thickness of 80mm-120mm.
[0016] The utility model at least has the following beneficial effects:
[0017] First, the large walk-in salt spray box provided by the utility model has a large internal volume, reasonable space allocation and good structural support, and can be used to carry out salt spray tests on large automobile parts, batch parts, and complete vehicle test pieces.
[0018] Second, the large walk-in salt spray chamber provided by the utility model is provided with a waiting area. Personnel enter the waiting area from the second insulation door and then enter the test area, which minimizes the impact of personnel entry and exit and specimen replacement on the temperature and humidity in the test area.
[0019] Thirdly, the utility model makes the test area and the circulation adjustment area the same and installs air circulation and various pipelines so that the temperature and humidity in the walk-in salt spray box can be adjusted in time.
[0020] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a front schematic diagram of a large walk-in salt spray chamber in a technical solution of the utility model;
[0022] Figure 2 It is a schematic diagram of the back side of a large walk-in salt spray box in a technical solution of the utility model;
[0023] Figure 3 It is a schematic diagram of the assembly of the salt spray chamber shell in a technical solution of the utility model;
[0024] Figure 4 A schematic diagram of a test area in a technical solution of the utility model;
[0025] Figure 5 It is a cross-sectional schematic diagram of a large walk-in salt spray chamber in a technical solution of the utility model;
[0026] Figure 6It is a regional schematic diagram of a large walk-in salt spray chamber in a technical solution of the utility model;
[0027] Figure 7 This is a working schematic diagram of a salt mist release nozzle and a temperature and humidity regulating pipe group in a technical solution of the utility model; DETAILED DESCRIPTION
[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.
[0029] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.
[0030] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the components can be obtained from commercial channels unless otherwise specified; in the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood in specific circumstances. The orientation or position relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.
[0031] like Figure 1-7 As shown, the technical solution of the present application provides a large walk-in salt spray chamber, comprising:
[0032] The supporting bottom plate 1 is detachably connected to a connected salt spray box shell 2 and a functional area box shell 3. A partition wall 4 is provided at the connection position between the functional area box shell 3 and the salt spray box shell 2 to separate the internal spaces of the two. The area enclosed by the salt spray box shell 2 and the partition wall 4 is a test area 20. The area enclosed by the functional area box shell 2 and the partition wall 4 is divided into a circulation adjustment area 30 and a waiting area 31 by a partition. The partition wall 4 is provided with a first air vent 41 and a second air vent 42 to separate the test area 20 and the circulation adjustment area 30. The test area 20 and the waiting area 31 are connected, and a manhole 40 is provided on the partition wall panel 4 to connect the test area 20 and the waiting area 31. A first insulation door 210 is provided on the side wall of the salt spray box shell 2, and a second insulation door 310 is provided on the side wall of the functional area box shell 3 around the waiting area 31. The test control device includes a salt spray release nozzle 7 and a temperature and humidity adjustment pipe group 6. The salt spray release nozzle 7 is fixed in the test area 20, and the temperature and humidity adjustment pipe group 6 is fixed in the circulation adjustment area 30.
[0033] In the present technical scheme, the supporting bottom plate 1 is composed of finished channel steel and insulation board, and has good load-bearing capacity and heat preservation capacity. The salt spray box shell 2 and the functional area box shell 3 are assembled by a composite insulation board with good corrosion resistance. The box shell is leak-proof and fog-proof after assembly. The first insulation door 210 is a double-opening outward-opening hinged door. After opening, a large test component can pass through it, and the insulation performance is the same as the salt spray box shell 2 and there is good sealing between the two. The insulation door 210 door frame is embedded with a heating wire to prevent external frost. The second insulation door 310 is a single-opening hinged door. The material of the second insulation door 310 is the same as the first insulation door 210. Its purpose is to prevent personnel from entering the salt spray box or needing to enter the salt spray box during a long reciprocating cycle experiment. When components need to be replaced, there is no need to open the larger insulation door 210, which causes a large change in the temperature and humidity of the test area 20. Optionally, the manhole 40 can be closed when no one enters. The test area 20 and the circulation adjustment area 30 are spatially connected. In order to place test racks and components in the test area 20, the temperature and humidity adjustment equipment are all arranged in the circulation adjustment area 30. The gas in the test area 20 enters the circulation adjustment area 30 for heating and humidification, and then circulates back to the test area 20. Optionally, fans and other equipment can be added in the circulation adjustment area 30 to allow the mist to circulate better in the test area 20 and the circulation adjustment area 30. A temperature and humidity sensor is provided in the salt spray chamber shell 2 and is electrically connected to an external control cabinet.
[0034] In the present technical solution, the salt spray release nozzle 7 is arranged on the upper inner side of the salt spray box shell 2 and the supporting bottom plate 1. When the component is placed on the supporting bottom plate 1, the spraying range of the salt spray release nozzle 7 can evenly cover the upper and lower surfaces of the test component. The salt spray release nozzle 7 is connected to the salt solution barrel 71, the saturated barrel 72, and the pure water barrel 73 through the pipeline outside the salt spray box shell 2. The saturated barrel 72 is used to heat the compressed air to generate saturated steam. The salt spray release nozzle 7 evenly atomizes the salt spray mixed with hot steam and salt water and sprays it into the test area 20. The pure water stored in the pure water barrel 73 is used to clean the saturated barrel 72 and the salt spray release nozzle 7. Pure water is provided in the cleaning stage, and the temperature and humidity regulating tube group 6 is wrapped with a corrosion-resistant metal layer and fixed to the circulation adjustment area 30 by a metal bracket. Optionally, the temperature and humidity regulating tube group 6 is connected to a compressor 630, a water vapor generator 620 and other equipment through a pipeline outside the salt spray box shell 1, and the temperature and humidity regulating tube group 2 is electrically connected to an external control cabinet to adjust the temperature and humidity of the aerosol in the circulation adjustment area 30. The technical solution provides a large walk-in salt spray box, which can perform high-temperature, low-temperature, and reciprocating salt spray tests on large or even whole vehicle test components, and has a reasonable space design and salt spray spray layout, which is convenient for various tasks in the test.
[0035] In another technical solution, the first air vent 41 is located at the upper part of the partition wall 4, and an electric shutter 411 is installed therein; an air supply fan 8 is installed on one side of the first air vent 41 located in the circulation adjustment area 30; the air supply fan 8 is connected to a fan motor 81 outside the functional area box shell 3; the second air vent 42 is located at the lower part of the partition wall 4; a salt spray filter 5 is installed on one side of the second air vent 42 located in the circulation adjustment area 30; a temperature-insulating rolling shutter door 401 is installed in the manhole 40; the air supply fan 8 supplies air to the test area 20, forming an airflow circulation between the test area 20 and the circulation adjustment area 30; the electric shutter 411 is in a normally closed state when no air is supplied. The second air outlet 42 is detachably provided with a grille plate 421. When the airflow in the test area 20 enters the circulation adjustment area 30 from the second air outlet 42, it is first filtered by the salt spray filter 5 to prevent excessive salt spray from entering the circulation adjustment area 30 and causing excessive corrosion to the equipment pipeline. The grille plate 421 can be removed to replace the filter element of the salt spray filter 5. The thermal insulation rolling shutter door 401 is always kept closed during the test. When it is necessary to observe or replace the test components during the test, the experimenter first enters the waiting area 31 from the second thermal insulation door 310, then closes the second thermal insulation door 310, and then opens the thermal insulation rolling shutter door 401. This can avoid temperature and humidity changes in the test area 20 to the greatest extent and reduce the energy consumption of the overall unit.
[0036] In another technical solution, the temperature and humidity regulating tube group 6 includes an evaporator 63, a humidifying tube 62, and a heating tube 61. The tube body of the temperature and humidity regulating tube group 6 is supported by a bracket. The evaporator 63, the humidifying tube 62, and the heating tube 61 are all provided with a solution inlet and an outlet on the functional area box shell 3. The evaporator 63 pipeline is connected to the compressor 630. The evaporator 63 is composed of a plurality of coils with coolant inside. The evaporator 63 can achieve the effect of cooling or condensing water vapor through the evaporation of the internal coolant. The humidifying tube 62 is connected to the water vapor generator 620. The humidifying tube 62 can release water vapor into the circulation adjustment area 30 by means of a nozzle or a spray hole, and adopts a forced air convection method to facilitate the circulation of the gas.
[0037] In another technical solution, the supporting base plate 1 includes a steel frame base 10 and a box shell bottom plate 11, and the part of the box shell bottom plate 11 located in the test area 20 is fixedly connected upward with a grid support 110, on which a steel grid 12 is supported. Due to the increase in the volume and mass of the test component, it is necessary to avoid direct contact between the test component and the box shell bottom plate 11 to cause damage, and due to the spraying of a large amount of water mist and salt mist during the test, the box shell bottom plate 11 is used to support the steel grid 12 to solve the problem of water accumulation and ice accumulation on the ground, and some salt mist release nozzles 7 are arranged between the steel grid 12 and the box shell bottom plate 11 to spray salt mist from bottom to top.
[0038] In another technical solution, the portion of the box shell bottom plate 11 in the test area 20 is high in the middle and low on both sides. The box shell bottom plate 11 in the test area 20 is recessed downward along the edge circumference to form a drainage groove 111, and the accumulated water can flow to the drainage groove 111 by its own weight. A floor drain is provided in the drainage groove 111 to discharge the accumulated water out of the salt spray chamber.
[0039] In another technical solution, a steam spray pipe 9 is provided between the drainage groove 111 and the steel grid 12, and is circumferentially arranged just above the drainage groove. A nozzle is provided on the steam spray pipe 9. After the salt spray test is completed, the steam heating pipe 9 sprays a high-temperature aqueous solution in the test area 20 for cleaning. The steam heating pipe 9 can spray high-temperature steam into the test area 20 to increase the temperature and humidity when the humidity in the test area 20 needs to be quickly increased.
[0040] In another technical solution, the salt spray box shell 2 includes a salt spray box vertical plate 21 and a salt spray box top plate 22. The salt spray box top plate is a herringbone structure with a pointed top in the middle, and the angle of the pointed top is 115° to 120°. The pointed salt spray box top plate 22 avoids the situation where condensed water generated on the top of the plane is easily dripped onto the test component. The salt spray box vertical plate 21 is provided with an observation window 212, which is a three-layer vacuum window with an electronic heating defogging film. A plurality of LED lighting lamps are provided in the test area 20 for easy observation of the situation in the box.
[0041] In another technical solution, an exhaust through hole 211 and several air pressure balance holes 213 are provided on the salt spray box vertical plate 21, the exhaust through hole 211 is connected to an exhaust duct to the outside of the test area 20, the air pressure balance hole 213 is connected to a check valve to the outside of the test area 20, and the exhaust duct is connected to a fan. When the salt spray test is over or in other situations, the external fan is started to exhaust the air mist in the salt spray box shell 2. In order to ensure the air pressure balance in the salt spray box shell 2, external air enters from the air pressure balance hole 213, and a check valve is installed in the air pressure balance hole 213 or outside the salt spray box shell 2 to prevent salt spray from leaking out of the salt spray box shell 2 during the test.
[0042] In another technical solution, the salt spray box shell 2, the functional area box shell 3, and the box shell bottom plate 1 are all sandwich-type plates consisting of an inert glass fiber reinforced plastic plate on one side, a stainless steel plate on one side, and an inner insulation layer. The insulation layer is a polyurethane material with a thickness of 80mm-120mm. The thickness of the inert glass fiber reinforced plastic plate is not less than 1mm, and the inert glass fiber reinforced plastic plates are all facing the inside of the salt spray box shell 2 and the functional area box shell 3. The thickness of the stainless steel plate is not less than 1mm. The inert glass fiber reinforced plastic plate and the stainless steel plate can be combined and connected by light steel keels or the like, and finally filled with a thermal insulation foaming agent to form an inner insulation layer.
[0043] The number of components and processing scale described here are used to simplify the description of the utility model. Applications, modifications and variations of the utility model are obvious to those skilled in the art.
[0044] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.
Claims
1. A large walk-in salt spray chamber, characterized in that: include: A supporting bottom plate, on which a salt spray box shell and a functional area box shell are detachably connected, a partition wall is provided at the connection position between the functional area box shell and the salt spray box box shell to separate the internal spaces of the two, the area enclosed by the salt spray box box shell and the partition wall is the test area, and a partition is provided in the area enclosed by the functional area box shell and the partition wall to divide the space into a circulation adjustment area and a waiting area, a first air vent and a second air vent are provided on the partition wall to connect the test area and the circulation adjustment area, a manhole is provided on the partition wall to connect the test area and the waiting area, a first insulation door is provided on the side wall of the salt spray box box shell, and a second insulation door is provided on the side wall of the functional area box shell around the waiting area; The test control device comprises a salt mist release nozzle and a temperature and humidity adjustment tube group, wherein the salt mist release nozzle is fixed in the test area, and the temperature and humidity adjustment tube group is fixed in the circulation adjustment area.
2. The large walk-in salt spray chamber according to claim 1, characterized in that: The first air outlet is located at the upper part of the partition wall panel, and an electric shutter is installed therein. An air supply fan is installed on one side of the first air outlet located in the circulation adjustment area, and the air supply fan is connected to a fan motor outside the functional area box shell. The second air outlet is located at the lower part of the partition wall panel, and a salt spray filter is installed on one side of the second air outlet located in the circulation adjustment area, and a temperature-insulating rolling shutter door is installed in the manhole.
3. The large walk-in salt spray chamber as claimed in claim 2, characterized in that: The temperature and humidity regulating tube group comprises an evaporator, a humidifying tube and a heating tube. The tube body of the temperature and humidity regulating tube group is supported by a bracket. The evaporator and the humidifying tube are both provided with a solution inlet and an outlet on the functional area box shell.
4. The large walk-in salt spray chamber according to claim 3, characterized in that: The supporting bottom plate comprises a steel frame base and a box shell bottom plate, and the part of the box shell bottom plate located in the test area is fixedly connected upward with a grid support, on which a steel grid is supported.
5. The large walk-in salt spray chamber as claimed in claim 4, characterized in that: The portion of the box shell bottom plate in the test area is high in the middle and low on both sides, and the box shell bottom plate in the test area is recessed downward along the periphery to form a drainage groove.
6. The large walk-in salt spray chamber according to claim 5, characterized in that: A steam spray pipe is arranged between the drainage trough and the steel grille, and is arranged in a circumferential manner just above the drainage trough.
7. The large walk-in salt spray chamber according to claim 6, characterized in that: The salt spray box shell comprises a salt spray box vertical plate and a salt spray box top plate. The salt spray box top plate is a herringbone structure with a pointed top in the middle, and the angle of the pointed top is 115° to 120°.
8. The large walk-in salt spray chamber according to claim 7, characterized in that: An exhaust through hole and several air pressure balance holes are opened on the vertical plate of the salt spray box. The exhaust through hole is connected to an exhaust pipe outside the test area, and the air pressure balance hole is connected to a check valve outside the test area.
9. The large walk-in salt spray chamber according to claim 7, characterized in that: The salt spray box shell, functional area box shell and box shell bottom plate are all sandwich-type plates consisting of an inert glass fiber reinforced plastic plate on one side, a stainless steel plate on the other side and an inner insulation layer. The insulation layer is a polyurethane material with a thickness of 80mm-120mm.